BY ORDER OF THE SECRETARY OF THE AIR FORCE AIR FORCE ...

AFMAN 11-217V1 3 JANUARY 2005 399
Chapter 19
CATEGORY II AND III ILS
19.1. Category II ILS Approach (Airport, Aircraft, and Aircrew Certification
Required). A Category II ILS approach provides the capability of flying to minima as low
as a DH of 100 feet and an RVR of 1200. The DH for a Category II approach is identified by
a pre-selected height on the aircraft radar altimeter. This figure is enclosed in parentheses on
the IAP and is prefaced by RA (Radar Altimeter), example: (RA 113).
19.1.1. Checks. Check flight directors, barometric and radar altimeters, and any other
Category II equipment. Set the DH on the radar altimeter (if required for the approach).
19.1.1.1. On certain Category II ILS approaches, the terminology “RA-NA” will be
annotated in the minimums section of the procedure. This indictes that the DH must
be determined solely from the barometric altimeter, not the radar altimeter.
19.1.2. Brief. Brief Category I procedures as a backup approach if appropriate.
19.1.3. Faults. Announce the illumination of any Category II system fault identification
light.
19.1.3.1 NOTE: Depending on the Category II equipment installed, a fault indication
below 300 feet AGL may require an immediate go-around command.
19.1.3.2. Failures Prior to 300 feet AGL. If any required Category II component fails
prior to 300 feet AGL, the system is capable of a Category I approach only unless the
failure can be corrected prior to 300 feet AGL.
19.1.3.3. Failures Below 300 feet AGL. Any failure of a required Category II
component below 300 feet AGL requires the pilot to execute an immediate missed
approach unless visual cues are sufficient to complete the approach and landing.
19.1.4. Advisory Calls. Make appropriate advisory altitude calls on the approach,
including a call 100 feet above the DH.
19.1.4.1. NOTE: Tolerances for continuing the approach from 100 feet above DH
are: airspeed ±5 knots of computed final approach speed or the speed directed by the
flight manual for Category II approaches, and deviation from glide slope and localizer
not to exceed one-half dot.
19.1.5. Visual Cues. From 100 feet above the DH to the Category II DH, the pilot not
flying the aircraft will concentrate primarily on outside references to determine if visual
cues are sufficient to complete the landing visually.
19.1.6. Continue. Continue the approach at DH only if the following conditions are
met:
19.1.6.1. Runway. Runway environment (as defined in para 14.1.1.2.6) is in sight.
19.1.6.2. Airspeed. Airspeed is within ± 5 knots of the computed final approach
speed or as directed by the flight manual.